model: add Clover support (#31306)
* model : add AR-only Clover MoE support
Add GGUF conversion, model loading, and causal hybrid attention for Clover, reusing shared attention, recurrent-state, MoE, and LoRA helpers.
* Update tests/test-llama-archs.cpp
Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@huggingface.co>
* convert : filter Clover tensors using filter_tensors
* clover : use the standard ssm_a tensor name
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Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@huggingface.co>
